ABSTRACT

As we reach toward, grasp, and then manipulate an object, our hand must be transported to the correct location and shaped to grasp the object. Whereas reaching to a given location and shaping the hand to grasp a particular object have been thought to proceed concurrently, accumulating evidence suggests a new perspective: Initially, the entire upper extremity is projected toward the appropriate location, and later both the arm and hand are shaped to grasp and manipulate the object.